Health & Fitness Calculators

Monitor your health, track fitness goals, and make informed decisions about your well-being with our comprehensive health calculators

Ovulation Calculator

Track ovulation, fertile window, and menstrual cycle for family planning

Menstrual Cycle Information

Select the first day of your most recent menstrual period
Days from first day of period to first day of next period (21-35 days normal)
Duration of menstrual bleeding (3-8 days normal)
Cycle: 28 days | Period: 5 days | Last period: 11 Nov 2025
Current phase: Unknown

Current Cycle Status

Current Phase
Unknown
Cycle Day
Day 1
Days to Ovulation
14
Days to Next Period
28
Status: Unknown phase
Normal cycle progression

Next Ovulation

Predicted Ovulation Date
25 Nov 2025
in 14 days
Cycle Day
14
Peak Fertility
20%

Fertile Window

6-Day Fertile Period
20 Nov 2025 - 25 Nov 2025
5 days before ovulation + ovulation day
Window Starts
20 Nov 2025
Window Ends
25 Nov 2025

Best Conception Days

Highest Probability Days
23 Nov 2025 (O-2)
24 Nov 2025 (O-1)
25 Nov 2025 (Ovulation)
2 days before ovulation through ovulation day

Next Period

Expected Period Date
09 Dec 2025
in 28 days
Luteal Phase
14 days
Period Length
5 days

Cycle Phases

🩸 Menstruation11 Nov 2025 - 15 Nov 2025
🌱 Follicular Phase11 Nov 2025 - 24 Nov 2025
🥚 Ovulation24 Nov 2025 - 26 Nov 2025
🌙 Luteal Phase26 Nov 2025 - 08 Dec 2025

Quick Summary

Next Ovulation:25 Nov 2025
Fertile Window:20 Nov 2025 - 25 Nov 2025
Next Period:09 Dec 2025
Current Phase:Unknown
Cycle Length:28 days

Future Cycles & Conception Tips

How Ovulation Calculation Works

Ovulation Timing

Ovulation typically occurs 14 days before the next period (luteal phase is consistently ~14 days). For a 28-day cycle, ovulation is predicted on day 14.

Your ovulation: Day 14 of cycle | Next ovulation: 25 Nov 2025

Fertile Window

Sperm can survive up to 5 days in the female reproductive tract. The fertile window includes the 5 days before ovulation plus the ovulation day itself (6 days total).

Your fertile window: 20 Nov 2025 to 25 Nov 2025 (6 days)

Best Conception Days

The highest pregnancy rates occur from intercourse on the 2 days before ovulation through ovulation day. These are your most fertile days.

Your best days: 23 Nov 2025, 24 Nov 2025, 25 Nov 2025

Cycle Phases

Menstrual cycle has 4 phases: Menstruation (5 days), Follicular (day 1 to ovulation), Ovulation (~2 days), and Luteal (ovulation to next period, ~14 days).

Current phase: Unknown | Cycle day: 1

Fertility & Health Guidelines

Tracking Methods:

  • Calendar Method: Track period dates consistently
  • Basal Body Temperature: Daily morning temperature
  • Cervical Mucus: Monitor changes in texture
  • Ovulation Kits: LH surge detection

Health Considerations:

  • Regular Cycles: 21-35 days is normal range
  • Lifestyle: Maintain healthy weight and diet
  • Stress Management: Can affect ovulation timing
  • Medical Advice: Consult doctor for irregularities

Your Cycle Summary:

Cycle Length: 28 days (Normal range)
Period Length: 5 days (Normal range)
Next Ovulation: 25 Nov 2025 (in 14 days)
Fertile Window: 20 Nov 2025 - 25 Nov 2025
Current Phase: Unknown
Next Period: 09 Dec 2025 (in 28 days)

Health & Fitness Tools

Categories

Body Composition3
Nutrition4
Women's Health2
Hydration1

Take Control of Your Health

Monitor your fitness journey and make informed health decisions

Quick Health Tips

Aim for 8-10 glasses of water daily
Include protein in every meal
Track your BMI regularly
Exercise 150 minutes per week